ACS-4 defines an NCQ encapsulation for READ LOG DMA EXT.
Signed-off-by: Hannes Reinecke <hare@xxxxxxxx>
---
include/linux/ata.h | 5 +++++
include/linux/libata.h | 7 +++++++
2 files changed, 12 insertions(+)
diff --git a/include/linux/ata.h b/include/linux/ata.h
index b84210a..94ccde5 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -306,6 +306,9 @@ enum {
/* marked obsolete in the ATA/ATAPI-7 spec */
ATA_CMD_RESTORE = 0x10,
+ /* Subcmds for ATA_CMD_FPDMA_RECV */
+ ATA_SUBCMD_FPDMA_RECV_RD_LOG_DMA_EXT = 0x01,
+
/* Subcmds for ATA_CMD_FPDMA_SEND */
ATA_SUBCMD_FPDMA_SEND_DSM = 0x00,
ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02,
@@ -329,7 +332,9 @@ enum {
ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET = 0x04,
ATA_LOG_NCQ_SEND_RECV_DSM_TRIM = (1 << 0),
ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET = 0x08,
+ ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED = (1 << 0),
ATA_LOG_NCQ_SEND_RECV_WR_LOG_OFFSET = 0x0C,
+ ATA_LOG_NCQ_SEND_RECV_WR_LOG_SUPPORTED = (1 << 0),
ATA_LOG_NCQ_SEND_RECV_SIZE = 0x10,
/* READ/WRITE LONG (obsolete) */
diff --git a/include/linux/libata.h b/include/linux/libata.h
index a418bca..09ddb5a 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1642,6 +1642,13 @@ static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
}
+static inline bool ata_fpdma_read_log_supported(struct ata_device *dev)
+{
+ return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
+ (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] &
+ ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED);
+}
+
static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
{
qc->tf.ctl |= ATA_NIEN;
--
1.8.5.6
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